From bb50acdcb8073654ea667b8c0272e335bd43f844 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 14 Apr 2022 20:12:14 +0200
Subject: Merging upstream version 1.34.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 backends/nc-backend.sh | 158 -------------------------------------------------
 1 file changed, 158 deletions(-)
 delete mode 100755 backends/nc-backend.sh

(limited to 'backends/nc-backend.sh')

diff --git a/backends/nc-backend.sh b/backends/nc-backend.sh
deleted file mode 100755
index 65704b98f..000000000
--- a/backends/nc-backend.sh
+++ /dev/null
@@ -1,158 +0,0 @@
-#!/usr/bin/env bash
-
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-# This is a simple backend database proxy, written in BASH, using the nc command.
-# Run the script without any parameters for help.
-
-MODE="${1}"
-MY_PORT="${2}"
-BACKEND_HOST="${3}"
-BACKEND_PORT="${4}"
-FILE="${NETDATA_NC_BACKEND_DIR-/tmp}/netdata-nc-backend-${MY_PORT}"
-
-log() {
-	logger --stderr --id=$$ --tag "netdata-nc-backend" "${*}"
-}
-
-mync() {
-	local ret
-
-	log "Running: nc ${*}"
-	nc "${@}"
-	ret=$?
-
-	log "nc stopped with return code ${ret}."
-
-	return ${ret}
-}
-
-listen_save_replay_forever() {
-	local file="${1}" port="${2}" real_backend_host="${3}" real_backend_port="${4}" ret delay=1 started ended
-
-	while true
-	do
-		log "Starting nc to listen on port ${port} and save metrics to ${file}"
-		
-		started=$(date +%s)
-		mync -l -p "${port}" | tee -a -p --output-error=exit "${file}"
-		ended=$(date +%s)
-		
-		if [ -s "${file}" ]
-			then
-			if [ ! -z "${real_backend_host}" ] && [ ! -z "${real_backend_port}" ]
-				then
-				log "Attempting to send the metrics to the real backend at ${real_backend_host}:${real_backend_port}"
-				
-				mync "${real_backend_host}" "${real_backend_port}" <"${file}"
-				ret=$?
-
-				if [ ${ret} -eq 0 ]
-					then
-					log "Successfully sent the metrics to ${real_backend_host}:${real_backend_port}"
-					mv "${file}" "${file}.old"
-					touch "${file}"
-				else
-					log "Failed to send the metrics to ${real_backend_host}:${real_backend_port} (nc returned ${ret}) - appending more data to ${file}"
-				fi
-			else
-				log "No backend configured - appending more data to ${file}"
-			fi
-		fi
-
-		# prevent a CPU hungry infinite loop
-		# if nc cannot listen to port
-		if [ $((ended - started)) -lt 5 ]
-			then
-			log "nc has been stopped too fast."
-			delay=30
-		else
-			delay=1
-		fi
-
-		log "Waiting ${delay} seconds before listening again for data."
-		sleep ${delay}
-	done
-}
-
-if [ "${MODE}" = "start" ]
-	then
-
-	# start the listener, in exclusive mode
-	# only one can use the same file/port at a time
-	{
-		flock -n 9
-		# shellcheck disable=SC2181
-		if [ $? -ne 0 ]
-			then
-			log "Cannot get exclusive lock on file ${FILE}.lock - Am I running multiple times?"
-			exit 2
-		fi
-
-		# save our PID to the lock file
-		echo "$$" >"${FILE}.lock"
-
-		listen_save_replay_forever "${FILE}" "${MY_PORT}" "${BACKEND_HOST}" "${BACKEND_PORT}"
-		ret=$?
-
-		log "listener exited."
-		exit ${ret}
-
-	} 9>>"${FILE}.lock"
-
-	# we can only get here if ${FILE}.lock cannot be created
-	log "Cannot create file ${FILE}."
-	exit 3
-
-elif [ "${MODE}" = "stop" ]
-	then
-
-	{
-		flock -n 9
-		# shellcheck disable=SC2181
-		if [ $? -ne 0 ]
-			then
-			pid=$(<"${FILE}".lock)
-			log "Killing process ${pid}..."
-			kill -TERM "-${pid}"
-			exit 0
-		fi
-
-		log "File ${FILE}.lock has been locked by me but it shouldn't. Is a collector running?"
-		exit 4
-
-	} 9<"${FILE}.lock"
-
-	log "File ${FILE}.lock does not exist. Is a collector running?"
-	exit 5
-
-else
-
-	cat <<EOF
-Usage:
-
-    "${0}" start|stop PORT [BACKEND_HOST BACKEND_PORT]
-
-    PORT          The port this script will listen
-                  (configure netdata to use this as a second backend)
-
-    BACKEND_HOST  The real backend host
-    BACKEND_PORT  The real backend port
-
-    This script can act as fallback backend for netdata.
-    It will receive metrics from netdata, save them to
-    ${FILE}
-    and once netdata reconnects to the real-backend, this script
-    will push all metrics collected to the real-backend too and
-    wait for a failure to happen again.
-
-    Only one netdata can connect to this script at a time.
-    If you need fallback for multiple netdata, run this script
-    multiple times with different ports.
-
-    You can run me in the background with this:
-
-    screen -d -m "${0}" start PORT [BACKEND_HOST BACKEND_PORT]
-EOF
-	exit 1
-fi
-- 
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